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Configuration Guide - Security

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of Security, including ACL, local attack defense, MFF, attack defense, traffic suppression and storm control, ARP security, Port security, DHCP snooping, ND snooping, PPPoE+, IPSG, SAVI, separating the management plane from the service plane, security risks.
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Configuring Rate Limit on ARP Packets based on the Destination IP Address

Configuring Rate Limit on ARP Packets based on the Destination IP Address

Context

When processing a large number of ARP packets with the same destination IP address, the CPU is overloaded and cannot process other services.

To prevent this problem, limit the rate of ARP packets based on the destination IP address. The device collects statistics on ARP packets with a specified destination IP address. If the number of received ARP packets with the specified destination IP address per second exceeds the threshold, the device discards the excess ARP packets.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run arp anti-attack rate-limit destination-ip maximum maximum

    Rate limit on ARP packets based on the destination IP address is configured.

    By default, the maximum rate of ARP packets sent to each destination IP address is set to 500 pps, that is, a maximum of 500 ARP packets with the same destination IP address are allowed to pass through per second.

  3. Run commit

    The configuration is committed.

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Updated: 2019-04-20

Document ID: EDOC1100074765

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